If I use atioglxx 10.1 , 10.4 I get the same error.
If I rename them to OpenGL32 I get :
Initializing OpenGL subsystem
...initializing QGL
...calling LoadLibrary( 'C:\Windows\system32\opengl32.dll' ): failed
...shutting down QGL
----- CL_Shutdown -----
RE_Shutdown( 1 )
-----------------------
GLW_StartOpenGL() - could not load OpenGL subsystem

If I use gldirect5 (openGL32) I get the same as above:
GLW_StartOpenGL() - could not load OpenGL subsystem.

If I use atioglxx 11.1a I get:
loadlibrary failed with error 193 %1 is not a valid win32 application.

I still have to try my driver(11.8) atioglxx and rename it to opengl32.

Do you have any more ideas?
This is my favorite game on PC and if it don't work, than my HD 5770 is petty much useless.
Jedi Outcast is all I play.